/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * </p>
 */

package io.shardingsphere.opentracing.config;

import com.google.common.base.Optional;

/**
 * Parse config from java opts.
 * 
 * @author gaohongtao
 * @author wangkai
 */
public final class OpentracingConfigurationParser implements ConfigurationParser {
    
    private static final String PREFIX = "shardingjdbc.opentracing";
    
    @Override
    public Optional<String> parse(final String configItem) {
        return Optional.fromNullable(System.getProperty(PREFIX + "." + configItem));
    }
}
